题目内容

According to the text, in what way do men and women evaluate their appearance differently?

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What causes women to be always dissatisfied with their looks?

What is the author's attitude toward the claim that women care much about their appearance due to pressure from men?

初等行变换改变方程组的解( )。

A. 对
B. 错

如果两个方程组等价,则它们解的情况相同。()

A. 对
B. 错

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